Home / 20,977.22-31,456.42-6,180.95

Finding the Fourth Proportional to 20,977.22, 31,456.42 and 6,180.95

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Solution

The fourth proportional to 20,977.22, 31,456.42 and 6,180.95 is: 9,268.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.22 : 31,456.42 = 6,180.95 : x
  2. Step 2: Convert to fraction form
    20,977.22/31,456.42 = 6,180.95/x
  3. Step 3: Cross multiply
    20,977.22x = 31,456.42 × 6,180.95
  4. Step 4: Simplify right side
    20,977.22x = 194,430,622.39
  5. Step 5: Solve for x
    x = 194,430,622.39/20,977.22
  6. Step 6: Final answer
    x = 9,268.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.